There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

When 99 is considered higher than 100?

What has 13 hearts but no other organs?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

What has one letter and starts with an E?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

One day Jenifer meets the Lion and the Tiger in the Forest of Forgetfulness. She knows that the Lion lies on Mondays, Tuesdays, and Wednesdays, and tells the truth on the other days of the week. The Tiger, on the other hand, lies on Thursdays, Fridays, and Saturdays, but tells the truth on the other days of the week. Now they make the following statements to Jenifer:

Lion: Yesterday was one of my lying days.

Tiger: Yesterday was one of my lying days too.

What day is it?

What is the end of everything?

Solve the counting riddle by identifying the number of triangles in the given picture.